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32 vs. 64: What Bit Windows?
The 64-bit version of Windows has certain advantages. While the 32-bit version is limited to 4GB of RAM-and can't really make use of all that-the 64-bit version can address up to 8TB.
32, 64, 86: Chip Numbers Explained
The 32-bit and the 64-bit chips that run Windows-capable PCs use what's called the x86 instruction set. But since the x86 label was in common use before 64-bit systems hit the market, ...